Hanging basket straw biogas fermentation system

Abstract

The invention relates to a hanging-basket-type straw marsh gas fermentation system and belongs to the field of biogas energy. The hanging-basket-type straw marsh gas fermentation system consists of a hoisting system and a fermentation system 7, wherein the hoisting system consists of rails 1, a hoisting frame 2, a hoisting device 3 and a lifting hook 4; the fermentation system 7 is made up of a plurality of single fermentation devices 14, a straw loading area 10, a biogas residue discharging area 11 and a biogas liquid circulated stirring system 13; each single fermentation device 14 is a single sequencing-batch fermentation tank, a hanging basket 8 is arranged in each single fermentation device, and a residue blocking plate 16 is arranged in each hanging basket 8; a liquid inlet 17 is formed in the upper part of the sidewall of each single fermentation device 14, a liquid outlet 18 is formed in the lower part of the sidewall of each single fermentation device 14, and the liquid inlets 17 and the liquid outlets 18 are connected with the biogas liquid circulated stirring system 13. According to the hanging-basket-type straw marsh gas fermentation system, the raw materials are not required to be pretreated, the global stability of gas supply yield and methane content is effectively guaranteed, and straws are prevented from floating and crusting; the charging and discharging are convenient, and the operation maintenance is simple.

Description

technical field [0001] The invention belongs to the field of biogas energy, and in particular relates to a hanging basket type straw biogas fermentation system. Background technique [0002] The raw materials of existing straw continuous fermentation devices generally need to be pretreated such as crushing, because of their poor fluidity, mechanical stirring is usually required to achieve mass and heat transfer. The specific gravity of the straw is light, and it is easy to float up to form a hard shell after entering the fermentation device, which hinders the accumulation of biogas generated in the pond and reduces the utilization rate of raw materials. As a result, the material concentration of the current straw biogas continuous fermentation device is low, and the output is basically completed by mechanical equipment, which requires a large investment in equipment, high energy consumption, and low efficiency of anaerobic digestion for gas production. The single sequence b...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the existing straw continuous fermentation device that the raw materials need to be pretreated, the energy consumption is high, and the gas production efficiency of anaerobic digestion is low, and to provide people with a method that does not need to pretreat the raw materials and effectively guarantees the gas supply output. The overall stability of the content and methane content prevents the straw from floating and encrusting, and the feeding and discharging is convenient, and the operation and maintenance of the hanging basket straw biogas fermentation system are simple

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